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A vacuum preheating electron beam welding device for large thickness workpieces

An electron beam welding, large-thickness technology, applied in electron beam welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of reduced cooling rate, poor plastic toughness of welds, and large tendency of weld cracks to improve heating efficiency. , Guarantee welding quality, prevent oxidation effect

Active Publication Date: 2022-08-02
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention designs a vacuum preheating electron beam welding device for large thickness workpieces, realizes high temperature preheating in a vacuum environment, effectively reduces the cooling rate, and avoids the generation of hardened structures in the weld seam and the heat affected zone. , using high-temperature preheating and electron beam welding methods to solve the problems of high-strength steel, high-strength titanium alloy and other products with a large tendency to crack welds and poor weld plasticity and toughness

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  • A vacuum preheating electron beam welding device for large thickness workpieces
  • A vacuum preheating electron beam welding device for large thickness workpieces

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Embodiment Construction

[0013] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-2 As shown, the present invention provides a vacuum preheating electron beam welding device for high-strength alloy workpieces with large thickness, including: a vacuum chamber 1, a heating device 2, a mobile platform 3, an electron gun 5, a clamping tool 6 and a workpiece to be welded 7 , the workpiece to be welded 7 is composed of two large-thickness workpieces, and the thickness is more than 100mm.

[0015] Wherein, the heating device 2 includes an upper heating assembly 2-1, a lower heating assembly 2-2 and three side wall heat insulation protection assemblies 2-3, which are connected by bolts to form a box structure with an opening on one side, which can be welded according to the workpiece to be welded. The size is adjusted, and the heating assembly is composed of high-temperature heating devices, which are ...

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Abstract

The invention relates to a vacuum preheating electron beam welding device for large-thickness workpieces, comprising a vacuum chamber, a heating device, a mobile platform, an electron gun, a clamping tool and a workpiece to be welded. Two upper and lower heating components and three side wall heat insulation protection components are used to achieve high temperature preheating of workpieces in a vacuum environment, effectively reducing the cooling rate, avoiding the generation of hardened structures in welds and heat affected zones, using high temperature preheating and electron beams The welding method solves the problems of high-strength steel, high-strength titanium alloy and other products with a large tendency to crack in the weld and poor plastic toughness of the weld.

Description

technical field [0001] The invention relates to the field of metal material welding, in particular to a vacuum preheating electron beam welding device for large-thickness workpieces. Background technique [0002] With the development of material science, the application demand of new high-strength titanium alloys and high-strength steels is increasing. However, due to the increase in material strength, high-strength alloys have higher cold crack susceptibility during welding, and rapid cooling after welding will cause a large number of internal martensitic However, when the preheating temperature is high, the difficulty of manual welding is significantly increased, especially when the preheating temperature is high. When the thermal temperature is higher than 300 °C, the surface of the high-strength titanium alloy will react with hydrogen and oxygen in the air, and when the temperature is higher than 500 °C, it will react with nitrogen, which cannot be implemented in the atm...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/06B23K15/00
CPCB23K15/06B23K15/0033B23K15/0046
Inventor 于冰冰张云浩郭立栋边传新付海涛耿永亮余巍
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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